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92 lines
2.7 KiB
C
Executable File
92 lines
2.7 KiB
C
Executable File
/*****************************************************************************/
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/* */
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/* Watara Supervision sample C program */
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/* */
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/* Fabrizio Caruso (fabrizio_caruso@hotmail.com), 2019 */
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/* */
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/*****************************************************************************/
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#include <supervision.h>
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#include <peekpoke.h>
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// Number of bytes per screen line (Remark: Last 8 bytes are not displayed)
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#define BYTES_PER_LINE 48
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// Character definitions in 8x8 format
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const unsigned char h_char[] = {0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00};
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const unsigned char e_char[] = {0x7E,0x60,0x60,0x78,0x60,0x60,0x7E,0x00};
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const unsigned char l_char[] = {0x60,0x60,0x60,0x60,0x60,0x60,0x7E,0x00};
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const unsigned char o_char[] = {0x3C,0x66,0x66,0x66,0x66,0x66,0x3C,0x00};
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const unsigned char w_char[] = {0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00};
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const unsigned char r_char[] = {0x7C,0x66,0x66,0x7C,0x78,0x6C,0x66,0x00};
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const unsigned char d_char[] = {0x78,0x6C,0x66,0x66,0x66,0x6C,0x78,0x00};
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void clear_screen(void)
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{
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unsigned short i;
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for(i=0;i<0x2000;++i)
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{
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POKE(SV_VIDEO+i,0);
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}
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}
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// Necessary conversion to have 2 bits per pixel with darkest hue
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// Remark: The Supervision uses 2 bits per pixel and bits are mapped into pixel in reversed order
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unsigned char reversed_map_one_to_two_lookup[16] =
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{
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0x00, 0xC0, 0x30, 0xF0, 0x0C, 0xCC, 0x3C, 0xFC,
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0x03, 0xC3, 0x33, 0xF3, 0x0F, 0xCF, 0x3F, 0xFF
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};
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unsigned char left_map_one_to_two(unsigned char n)
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{
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return reversed_map_one_to_two_lookup[n >> 4];
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}
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unsigned char right_map_one_to_two(unsigned char n)
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{
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return reversed_map_one_to_two_lookup[n&0x0F];
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}
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void display_char(const unsigned char x, const unsigned char y, const unsigned char *ch)
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{
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unsigned char k;
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for(k=0;k<8;++k)
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{ \
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SV_VIDEO[2*(y)+BYTES_PER_LINE*k+BYTES_PER_LINE*(x<<3)] = left_map_one_to_two(ch[k]);
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SV_VIDEO[2*(y)+BYTES_PER_LINE*k+BYTES_PER_LINE*(x<<3)+1] = right_map_one_to_two(ch[k]);
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}
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}
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void init_lcd(void)
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{
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SV_LCD.width = 160;
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SV_LCD.height = 160;
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}
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int main()
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{
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init_lcd();
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clear_screen();
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display_char(3,2, h_char);
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display_char(3,3, e_char);
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display_char(3,4, l_char);
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display_char(3,5, l_char);
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display_char(3,6, o_char);
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display_char(3,8, w_char);
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display_char(3,9, o_char);
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display_char(3,10,r_char);
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display_char(3,11,l_char);
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display_char(3,12,d_char);
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while(1) {};
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return 0;
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}
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